The one is at D:/xampp201126.
The other is at D:/xampp210105.
I can get "downloads/myTest.sql" by the following process.
(1) After I activate phpmyadmin by clicking the control panel of D:/xampp201126, I open phpmyadmin.
(2) I click a database named "myDB".
(3) I click the "sending" button.
("sending" is translation of my mother tongue to English, it means, I guess, a kind of "dump" or "export")
(4) I click the "execution" button.
(5) Then, I can find a new file named "myDB.sql" in downloads directory.
And I try to do the following process.
(1) After I get the file "downloads/myDB.sql",
I activate phpmyadmin by clicking the control panel of D:/xampp210105.
(2) I open phpmyadmin.
(3) I click the "taking" button.
("taking" means, I guess, a kind of "import")
(4) I select "file selection" button.
(5) I choose the file "downloads/myDB.sql".
(6) I click the "execution" button.
As I click the "execution" button, it says like the following.(the following is all translation from my mother tongue)
"taking" is successfully finished. 48 query is executed. (myDB.sql)
ERROR
...
MySQL MESSAGE
#1046 - There is no selected database.
After the process above, I see no "myDB" is there.
What's wrong in your think?
Can I get "myDB" for D:/xampp210105 by your help?